Top Travel Power Bank Hits Rare Sale

If you're in the market for an Anker power bank robust enough for demanding devices like the Steam Deck, ROG Ally X, or even a laptop, the model I personally use has seen a price drop. Amazon is currently offering the Anker PowerCore 737 24,000mAh Power Bank featuring 140W Power Delivery for $87.99 with free delivery. I purchased this unit nearly two years ago and it remains in my daily rotation; it has accompanied me on numerous flights and road trips, performing as reliably as the day I bought it.

Anker 737 24,000mAh 140W Power Bank for $87.99

Anker 737 24,000mAh Power Bank with 140W USB Type-C Power Delivery

List Price: $109.99 | Save 20% | $87.99 at Amazon

The Anker 737 remains a top pick on our list of Steam Deck chargers. This is a substantial power bank, measuring 4.6"x2.2"x2" and weighing 1.4lbs. It's designed for your travel bag or backpack, not your pocket. It features two USB Type-C ports and one USB Type-A port. The USB-C ports support up to 140W of total power delivery. This means a single port can deliver the full 140W, or the power can be allocated between both ports based on connected device needs (e.g., 70W + 70W or 100W + 40W).

Regarding gaming handhelds, the Steam Deck supports charging up to 45W, the Asus ROG Ally up to 65W. The Asus ROG Ally X and Legion Go can handle up to 100W, while the Nintendo Switch and reported Switch 2 require between 20W and 30W. Consequently, the Anker 737 can power and charge all these devices at the same time.

A 24,000mAh battery offers an 89Wh capacity. Factoring in a standard 80% power bank efficiency rating provides you with roughly 71Wh of usable charge. In practical terms, this power bank can recharge a Steam Deck (40Wh) or Asus ROG Ally (40Wh) from empty to full approximately 1.8 times, an Asus ROG Ally X (80Wh) nearly 0.9 times, and a Nintendo Switch 2 (20Wh) about 3.6 times. This clearly illustrates why a smaller 10,000mAh power bank falls short for more power-hungry handhelds.

TSA Approval for the Anker 737

TSA regulations require carry-on power banks to have a capacity under 100Wh (they are never allowed in checked baggage). At a rated 74Wh, this Anker model is safely within that limit. Its substantial size might draw a second look from security, but it should pass without issue. I've taken mine through many airport checkpoints and was only asked to inspect it once—at Tokyo Narita—where it was cleared quickly.